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On 4 May 2001, at 17:48, Leon Martinez B. wrote: > Well remember guys when I told you I would > modify the starter injector circuit to accelerate > the car ? Well I did it and with the cold starting > feature intact. I also have and LED on my accelerator > circuit on switch to see when the injector is injectng. > The injector will only inject when engine is turning and > vacume drops suddenly, Okay, now I understand what you were planning with the pressure switch. > Well the experimental addition to my enrichment circuit > did not work well. The problem is that this kind of system simply turns on X cc/sec of additional fuel. This might be a perfect amount when the engine is putting out 130 power strokes a second, but much too much gas at low RPM and 20 power strokes per second. > If a NITRO canister were installed intead of fuel > to that injector then you would have some real > speed then. You'd still have the same problem, however, that the extra NITRO was not delivered in proportion to the air or RPM. > The bottom line is that my engine needs more oxigen > to take advantage of this mod, maybe increasing > the engines airflow... etc.. I wonder you could PWM drive the injector in proportion to the RPM? OTOH, why not just turn up the fuel pressure? If you do this, you get to take advantage of the fact that the ECU has already taken RPM and air flow into account and you get a mixture that is richer by the same % throughout its range. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org